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Found bug that skrewed up display wrt horizontal
[wxWidgets.git] / src / common / imaggif.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: imaggif.cpp
3// Purpose: wxGIFHandler
4// Author: Vaclav Slavik & Guillermo Rodriguez Garcia
5// RCS-ID: $Id$
6// Copyright: (c) 1999 Vaclav Slavik & Guillermo Rodriguez Garcia
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10#ifdef __GNUG__
11#pragma implementation "imaggif.h"
12#endif
13
14// For compilers that support precompilation, includes "wx.h".
15#include "wx/wxprec.h"
16
17#ifdef __BORLANDC__
18# pragma hdrstop
19#endif
20
21#ifndef WX_PRECOMP
22# include "wx/defs.h"
23#endif
24
25#if wxUSE_GIF
26
27#include "wx/imaggif.h"
28#include "wx/gifdecod.h"
29#include "wx/wfstream.h"
30#include "wx/log.h"
31#include "wx/intl.h"
32
33IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler)
34
35//-----------------------------------------------------------------------------
36// wxGIFHandler
37//-----------------------------------------------------------------------------
38
39#if wxUSE_STREAMS
40
41bool wxGIFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
42{
43 wxGIFDecoder *decod;
44 int error;
45 bool ok;
46
47// image->Destroy();
48 decod = new wxGIFDecoder(&stream, TRUE);
49 error = decod->ReadGIF();
50
51 if ((error != wxGIF_OK) && (error != wxGIF_TRUNCATED))
52 {
53 if (verbose)
54 {
55 switch (error)
56 {
57 case wxGIF_INVFORMAT:
58 wxLogError(_("wxGIFHandler: error in GIF image format."));
59 break;
60 case wxGIF_MEMERR:
61 wxLogError(_("wxGIFHandler: not enough memory."));
62 break;
63 default:
64 wxLogError(_("wxGIFHandler: unknown error!!!"));
65 break;
66 }
67 }
68 delete decod;
69 return FALSE;
70 }
71
72 if ((error == wxGIF_TRUNCATED) && verbose)
73 {
74 wxLogError(_("wxGIFHandler: data stream seems to be truncated."));
75 /* go on; image data is OK */
76 }
77
78 ok = decod->ConvertToImage(image);
79 delete decod;
80
81 return ok;
82}
83
84bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image),
85 wxOutputStream& WXUNUSED(stream), bool verbose )
86{
87 if (verbose)
88 wxLogDebug(wxT("wxGIFHandler is read-only!!"));
89
90 return FALSE;
91}
92
93bool wxGIFHandler::DoCanRead( wxInputStream& stream )
94{
95 wxGIFDecoder *decod;
96 bool ok;
97
98 decod = new wxGIFDecoder(&stream);
99 ok = decod->CanRead();
100 delete decod;
101
102 return ok;
103}
104
105#endif // wxUSE_STREAMS
106
107#endif // wxUSE_GIF